Contradiction with Jeremiah 17:5
This verse states that trusting in man leads to being cursed, contrasting with Psalms 25:20's plea for God to keep the soul and trust not to be ashamed.
Jeremiah 17:5: Thus saith the LORD; Cursed [be] the man that trusteth in man, and maketh flesh his arm, and whose heart departeth from the LORD.
Contradiction with Proverbs 28:26
It warns that trusting in one's own heart is foolish, which contrasts with the trust in God expressed in Psalms 25:20.
Proverbs 28:26: He that trusteth in his own heart is a fool: but whoso walketh wisely, he shall be delivered.
Contradiction with Isaiah 2:22
Advises not to rely on humans, hinting at a contrast to trusting in divine help as sought in Psalms 25:20.
Isaiah 2:22: Cease ye from man, whose breath [is] in his nostrils: for wherein is he to be accounted of?
Contradiction with Psalms 146:3
Advises against putting trust in princes and mortal men, which emphasizes reliance on God, compatible with Psalms 25:20.
Psalms 146:3: Put not your trust in princes, [nor] in the son of man, in whom [there is] no help. [help: or, salvation]